ST Modular Stereo Compressor (p&p)

14,95 €

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6HP Feedforward Stereo Compressor with Make-Up Gain to add some compression to your stereo mix.

STEREO COMPRESSOR is a classic analog Feedforward compressor which takes its sidechain split directly

from the input signal. It is based on the THAT4305 Analog Engine ® single-chip with integrated Blackmer ®

VCA. It has two indipendent signal paths in order to process stereo signals. The left input is normalized to the

right, if you want to compress mono signals instead.

The module has three controls and a switch:

THRESHOLD determines the level at which the compressor starts working. This can be set from -40 dB to 20 dB.

RATIO sets how much the compressor turns down the volume when the threshold is reached (INF:1 to 1:1).

GAIN regulates the amount of Make-Up Gain (-20 dB to +20 dB) that is applied to the signal.

Additionally there is an ON/OFF switch for easy compare of dry and wet signal.

Please note that if you turn THRESHOLD counter-clock wise to the left, you reduce the threshold from 20 dB

(fully cw) to -40 dB (fully ccw). Hence the compressor starts working earlier.

If you turn RATIO "ccw" to the left, you increase the amount of compression from 1:1 (fully cw - no compression)

to INF:1 (fully ccw - infinite compression). So turning the knobs down correspondends to compressing the


The module in the pictures shows "no compression applied"

STEREO EQ has a similar design as the STEREO SUM CHANNEL modules.


  • Analog Compressor
  • Stereo Signal Path
  • ON/OFF switch (dry/wet)
  • up to +20 dB Make-Up Gain
  • STEREO SUM compatible
  • Wrong Polarity Protection
  • Skiff friendly
  • 3U Eurorack, 6HP wide
  • Power Consumption: 35 mA at +12 V, 26mA at -12 V

*** panel & pcb only, no further parts are included here !

*** ***

BOM & Co